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The story, which originated from cybersecurity firm Fortinet went viral, raising questions about its authenticity.
Last week, Swiss news siteAargauer Zeitungreported that three million manipulated toothbrushes were involved in a cyberattack.
Others claimed there was no evidence to suggest such an attack ever occurred.
Cybersecurity expert Kevin Beaumont even highlighted that the story was being used as propaganda in Russian Telegram chats.
Fortinet did not want to reveal which company it was out of consideration for its customers.
The text was submitted to Fortinet for verification before publication.
The statement that this was a real case that really happened was not objected to."